34. Mini Projects

The chapters in this book mostly teach one concept at a time. Mini-projects are where you combine several ideas into a single usable program.

34.1. Project 1: Personal Expense Tracker

Build a command-line program that:

• reads expenses from a CSV file

• groups them by category

• prints totals and the largest category

• optionally writes a JSON summary file

34.2. Project 2: File Organizer

Build a script that scans a folder and sorts files into subfolders such as images, notes, and data based on file extension.

34.3. Project 3: Quiz Game

Build a small terminal quiz that:

• loads questions from JSON

• shuffles the question order

• tracks correct answers

• prints the final score

34.4. One complete solution

As a concrete example, here is a small solution for the quiz-game project shape.

import json
import random


QUESTIONS = json.loads(
    """
    [
      {"question": "2 + 2 = ?", "answer": "4"},
      {"question": "Capital of France?", "answer": "paris"},
      {"question": "Python file extension?", "answer": ".py"}
    ]
    """
)

random.shuffle(QUESTIONS)
score = 0

for item in QUESTIONS:
    print(item['question'])
    guess = input('> ').strip().lower()
    if guess == item['answer']:
        score += 1
        print('correct')
    else:
        print(f"wrong, expected {item['answer']}")

print(f'score: {score}/{len(QUESTIONS)}')